Simple cable clip for 2020 aluminum profile (6mm groove). Fast printing standing up in vase mode. Very strong through. The model is 100mm long so you can adjust Z proportion to get the length you need.

Same principle and same printing speed as my 10mn Led Strip Rail for 2020 profile, https://www.thingiverse.com/thing:2575322
and as my loop (open or closed) cable guide :
https://www.thingiverse.com/thing:2666871